Papers by Keyword: Conceptual Model

Abstract: Over the years, mechatronic systems have witnessed an increase in complexity. To address this issue, a model-based approach has been utilized to produce coherent system specification. In model-based engineering, a system is depicted graphically and textually at various levels of granularity and complexity. For this purpose, Systems Modeling Language (SysML) is designed to support development stages in systems, including specification, analysis, design, and validation, and to generate specifications in a single language for use by heterogeneous development teams. Nevertheless, an underlying tool is lacking that would express the totality of a system’s processes and concepts, including mechanical, electrical, and informational aspects. SysML introduces a variety of diagrams and tools that are heterogeneous in notation and terms, e.g., use cases, blocks, activities, components, parameters, sequence, and so forth. This paper proposes a diagrammatic methodology to specify a unified conceptual map for mechatronic systems that can play the role of blueprint for a whole system at different stages of development. The paper focuses on using the proposed methodology as a specification tool, offering a new model that captures the dynamic behaviors of the system. The claim is that this proposed model for specification provides a nontechnical map of the system without a multiplicity of representations as in SysML. To demonstrate the viability of the model, it is applied to a case study of an airport baggage handling system.

Abstract: The construction industry has many underlying causes of uncertainty that impact on late delivery of project completion's performance as well as in time management. Most of researchers proposed a modelling and simulation techniques to solve these uncertainties problem nevertheless not tackling the uncertainty in environmental issues (EI). Yet, the environmental issues were also leading significant deviations for project completion performance, which means it is important to be studied. Therefore, the comprehensive sturvey is discussed in this paper in purpose to develop the uncertainty modeling model on late delivery in environmental issues. The development of conceptual model through a comprehensive survey involving piping's construction industry for water supply company with multi-project construction environment is developed to show the relationship for each cause and affects that underlying uncertainty on late project delivery in environmental issues. Further research is to verify and validate the conceptual model as has been analyzed through fractional factorial design with ANOVA, through the development of uncertainty model via modeling and simulation using MATLAB.

Abstract: The agricultural products wholesale market holds an important part in the circulation of agricultural products in China. Regarding the construction planning for the agricultural productswholesale market as the aim of study, this paper systematically deeply studies the issues of wholesale market arranging from planning, construction to operation and management for building innovatively the construction planning model based on the wholesale market. The model is a conceptual one that consists of three related submodels, covering all the respects of the market from its beginning to development.Thismodel will offer the theoretical support and the methodical basis for construction and operation of the agricultural products wholesale market.

Abstract: In order to construct the groundwater numerical simulation model, the study area was determined on the basis of the geological and hydrogeological conditions. Taking Feflow as operating platform, combining GIS with Surfer software, a study area of the structure of three-dimensional aquifer model was established, realizing the 3D visualization of a large area of the complex geological content. Combined with the hydrogeological conditions, three-dimensional geological structure of the model further generalization. The result showed that the aquifer of the vertical was generalized into the unconfined aquifer; based on the characteristics of lithology, structure, parameters and distribution of recharge and discharge in groundwater system, the study area groundwater system was characterized by isotropic saturated-unsaturated numerical flow model, and the equilibrium composition of the elements was analysed in study area, the partition of the aquifer hydrogeological parameters was divided, lay the foundation for groundwater numerical model simulation.

Abstract: This paper summarizes the literature and presents important concepts related to conceptual model verification. Different approaches have been proposed in the literature. These approaches have been introduced as two parts with emphasis on formal techniques. First order logic for structural views and Petri nets for behavioral views are investigated in the search of a practical verification method for conceptual modeling in UML. Then a short assessment of formal verification work for UML will be presented.

Abstract: In order to cope with urban flooding, water scarcity and rainfall-runoff pollution comprehensively, a conceptual tank model of urban storm water system is proposed. Tank model is a multi-layer, multi-objective model, so design of urban storm water system is more complex than that of urban storm sewer system. Some principles of design of urban storm water system are discussed, such as Low Impact Development, Smart storm water management, and so on.

Abstract: This paper investigates the aerodynamic forces of several plunging wing models by means of computational fluid dynamics. A finite volume method was used to solve the two-dimensional unsteady incompressible Navier-Stokes equations. The forces and power efficiency have been calculated and compared between sets of different models. Current work found that the nonsymmetrical moving can enhance the lift and thrust forces. The numerical results also prove that the flexible wing model can be use to improve the efficiency and reduce the input. Additionally, a new conceptual model for flapping wing mechanism with active deformation and adaptive nonsymmetrical driving motion is proposed base on the numerical results.

Abstract: It sets up the system structure model of materiel system reliability simulation based on Adaptive Agent in the paper, emphasizes the devising thinking on SA, and not only provides the devising thinking and reference on other Adaptive Agent in the system structure model, but also establishes a base on a better operational and current reference technology model which helps to mission environment-oriented reliability analysis for materiel system. So by constant improving, it realizes for materiel system to simulate reliability operation in complex environment.

Abstract: Sustainable land use plays a vital role in the process of regional development. To pursuit the sustainable use of land resources will be the effective approach to address the conflictions among farmland conservation, social development and environment protection. This paper reviewed the relevant research and studies on the field of sustainable land use including its various definitions, the sustainability evaluation and optimization of land resources, got some conclusions about the prospects in the study on sustainable land use and finally addressed the conceptual model for evaluating and optimizing sustainable land use.

Abstract: The proposition of low-carbon tourism concept gave birth to the new developing rules of scenic area. Understanding the connotation of low-carbon scenic area and build the evaluation and certification of low-carbon scenic area as quickly as possible, which is the theoretical basis of low-carbon transition in scenic area. This paper builds a concept model of low-carbon Scenic Area by referring to the UN Commission on Sustainable Development (UNCSD)'s DSR (Driving — Status — Response) model, and understands the connotation of low-carbon scenic area from five levels which include development stage of scenic area, resources and environment, emission-reduction technology, consumer operation, policy concept. On the base above, to construct the evaluation system of low-carbon scenic area by choosing four level indicators including low-carbon resources evaluation, the development evaluation, the awareness evaluation and the experience evaluation , which can provide a reference for the development potential of low-carbon scenic area and provide the theoretical direction and the technical support for the inspect of future low-carbon scenic area, the cooperation of emission reduction projects and the establishment of discharge compensating system.